lol true
Yeah, Shadowcaster is fuckin nuts. I saw it on my phone on my way home and was pumped to theorycraft with it. I can imagine many things it's useful with, even Anub'arak assuming the 1/1 returns an 8/4 to your hand, meaning even if Anub gets silenced you still have a chance to beat heavy control decks. That primarily goes for Deathrattle/Raptor Rogue, but potentially control rogue if that becomes feasible. It's also pretty dank in mill as said but only really as an immediate push for cards, like to fill the gap between milling and not, if your opponent has like 8 or 9 cards before their turn. Otherwise it's just a 4/4 that acts like Gang Up but only gives you 1, which costs two less, so its like shadowstep, but it goes in your hand and not your deck, blah blah blah. I think I'd honestly prefer a 4-mana 3/3, but it being 5-mana lets it naturally curve out better with Tomb Pillager, who isn't the WORST target for Shadowcaster, since the mini pillager pays for itself.
Cool card, I really hope to see more stuff like this soon.